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methane

Feb 26, 2019

Methane-snacking crabs suggest hedge against climate change

Tanner crabs observed feasting at a bubbling methane seep on the deep seafloor in the northeast Pacific Ocean may be developing a way to adapt to climate change, says a marine ecologist from the University of Victoria whose work with Oregon-based researchers establishes for the first time that a commercially-harvested species is feeding on the energy source.

Researchers with Ocean Networks Canada (ONC), an initiative of University of Victoria (UVic), and...

Read more

methane | tanner crab | Climate | Fabio De Leo Cabrera

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New study quantifies natural flux of methane gas in the northeast Pacific

Beneath the ocean floor, bacteria produce methane gas that is regularly released up through the sediment and into the sea water as bubble streams (Figure 1). While these gas flares have been observed on continental margins around the world, until now there has been no systematic study of all available gas flow observation data to estimate the total amount of methane escaping from the seafloor. These data are important for the global inventory of carbon and also for analyzing the uptake of carbon dioxide (ocean acidification), and its impact on climate change.

Figure 1: Methane gas bubbles escaping the seafloor near Clayoquot Slope.

In a new...

Read more

methane | barkley canyon | gas hydrates

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Jul 3, 2014

Secret Lives of Submarine Gas Flares

We know that methane gas bubbles from the seafloor near our Clayoquot Slope study site (depth: 1250 m). But what is the variability of this venting, does it change over time, and what causes flares of methane bubbles to start, stop or shift locations? Where is the bubbling most continuous and where is it most unpredictable? These are questions visiting scientist Dr. Miriam Römer has been trying to answer. Römer, a research scientist with the MARUM Centre for Marine Environmental Sciences at the University of Bremen, spent the past 3 months working with Ocean Networks Canada staff scientists analyzing a large and disparate collection of data from Clayoquot Slope.

...
Read more

clayoquot slope | gas hydrates | gas flares | methane | hydrates | germany | Collaboration | visiting scientist | bubbles | gas plume

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Nov 2, 2018

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Sep 11, 2018

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Jul 4, 2018

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May 8, 2018

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May 8, 2018

Aug 15, 2013

Introduction to Barkley Canyon

Wally the crawler collecting data in ONC's Barkley Canyon observatory.

Barkley Canyon at a Glance:

  • Region: Extending from the continental shelf edge, at a depth of 400 m, and continuing down the continental slope to the canyon axis, at a depth of 985 m, Barkley Canyon is located at the leading edge of the Cascadia subduction zone.
  • Number of...
Read more

NEPTUNE | barkley canyon | wally | benthic | pod | gas hydrates | methane | bacterial mats

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May 28, 2013

Gas Plume Detected

Ocean Networks Canada’s first summer expedition aboard the CCGS John P. Tully returned to port with confirmation of a major discovery: an impressive plume of gas rising from the seafloor off Vancouver Island in a region monitored by the NEPTUNE observatory that has been discharging since at least 2010.

Multibeam sonar profile of the methane plume.

During the final leg of the month-long expedition in the Northeast Pacific Ocean, the vessel conducted sonar...

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methane | gas hydrates | hydrates | bubbles | sonar | ccgs | expedition | greenhouse gases

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Oct 15, 2012

Wally the Benthic Crawler

Deployed at a cold seep in the Barkley Canyon gas hydrate field, Wally the Benthic Crawler is equipped with sensors that measure temperature, pressure, water currents, salinity, methane, and turbidity. Wally’s webcam provides researchers with a detailed view of the seafloor sediments and local marine life. At a depth of 870 m, Wally is connected to the Barkley hydrates platform by a 70 m long cable and navigates a series of numbered way markers arranged along a seafloor tour route known as “Wally Land.”

...

Read more

wally | crawler | jacobs university | germany | bremen | methane | hydrates | gas hydrates | methane hydrates | sediment microprofiler | barkley

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Aug 27, 2012

Methane Flux in Barkley Canyon

 

Wally the Crawler sits atop some gas hydrates in Barkley Canyon.

It’s hardly been a case of “all play and no work” for Wally the Crawler. Researchers in Germany and Canada have been making heavy use of Wally and the unique data this deep-sea crawler gathers among the gas hydrates outcrops of Barkley Canyon.

A recent paper published in the journal ...

Read more

methane | wally | jacobs university | germany | barkley canyon | crawler | gas hydrates | methane hydrates | climate change | currents | bacterial mats

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